Survival and Development ofChrysoperla rufilabris(Neuroptera: Chrysopidae) Supplied with Pea Aphids (Homoptera: Aphididae) Reared on Alfalfa and Faba Bean

2000 ◽  
Vol 29 (2) ◽  
pp. 304-311 ◽  
Author(s):  
Kristopher L. Giles ◽  
Robin D. Madden ◽  
Mark E. Payton ◽  
Jack W. Dillwith
Keyword(s):  
Faba Bean ◽  
Pea Aphids ◽  
Survival And Development

FABA BEAN: LOW RESISTANCE TO PEA APHIDS, ACYRTHOSIPHON PISUM (HOMOPTERA: APHIDIDAE), IN ELEVEN CULTIVARS

1976 ◽  
Vol 56 (3) ◽  
pp. 451-453 ◽  
Author(s):  
B. D. FRAZER ◽  
D. RAWORTH ◽  
T. GOSSARD
Keyword(s):  
Vicia Faba ◽  
Faba Bean ◽  
Acyrthosiphon Pisum ◽  
Broad Bean ◽  
Developmental Rate ◽  
Low Resistance ◽  
Pea Aphids ◽  
Vicia Faba L ◽  
Faba Beans

Eleven cultivars of faba beans and one of broad bean (Vicia faba L.) were bioassayed for resistance to pea aphids (Acyrthosiphon pisum (Harris)) by determining the fecundity, survival and developmental rate of the aphid on each cultivar. None of the cultivars tested, including the three licensed for production in Canada, possess any significant resistance, although they differ in susceptibility.

scholarly journals First Report of Bean Leafroll Luteovirus Infecting Pea in Italy

Plant Disease ◽  
1999 ◽  
Vol 83 (4) ◽  
pp. 399-399 ◽  
Author(s):  
R. C. Larsen ◽  
D. M. Webster
Keyword(s):  
Nucleic Acid ◽  
Faba Bean ◽  
Acyrthosiphon Pisum ◽  
Sequence Data ◽  
Potassium Phosphate ◽  
Leaf Tissue ◽  
Po River ◽  
First Report ◽  
Access Period ◽  
Pea Aphids

Approximately 5,000 ha of processing peas (Pisum sativum L) are cultivated annually in the Po River Valley of northern Italy. During the 1998 growing season, affected pea plants in this region were observed that exhibited mild chlorosis and mottling, leaf rolling, and stunting symptoms. High aphid populations and disease levels of nearly 100% were observed in susceptible varieties. Samples from affected fields were analyzed for the presence of bean leafroll virus (BLRV). Nonviruliferous pea aphids (Acyrthosiphon pisum Harris) received a 48-h acquisition access period on symptomatic leaves. Aphids were then transferred to Puget pea and Diana faba bean for a 72-h inoculation access period. Leaf samples were also macerated in 0.05 M potassium phosphate pH 7.4, and inoculated mechanically to pea, faba bean, chickpea (Cicer arietinum L.), Chenopodium quinoa Willd., and C. amaranticolor Coste & Reyn. Symptoms typical of those observed in the original field plants appeared 10 to 14 days after aphid transmissions in both pea and faba bean inoculated with pea aphids. No symptoms were observed in any of the hosts that were inoculated mechanically. Total nucleic acid extracts from the original pea samples, and from leaf tissue of pea and faba bean plants inoculated with aphids, served as templates in reverse-transcriptase polymerase chain reaction assays. Primers BLR-V157 and BLR-C546, which flanked a 400-bp fragment, were designed with available sequence data for the coat protein gene of BLRV (1). An amplification product of the expected size was generated from symptomatic plants but not from healthy controls. Sequence analysis of the cloned fragments revealed a 99% nucleic acid homology with the published sequence for BLRV and an isolate obtained from alfalfa in Washington State (R. Larsen, unpublished). This is the first report of BLRV in Italy. Reference: (1) B. Brill et al. Nucleic Acids Res. 18:5544, 1990.

Soil solarization, a non-chemical technique for controlling Orobanche crenata and improving yield of faba bean

Agronomie ◽  
2001 ◽  
Vol 21 (8) ◽  
pp. 757-765 ◽  
Author(s):  
Giovanni Mauromicale ◽  
Giuseppe Restuccia ◽  
Mario Marchese
Keyword(s):  
Faba Bean ◽  
Soil Solarization ◽  
Orobanche Crenata ◽  
Chemical Technique

Bagworm Survival and Feeding Preferences as Indicators of Resistance among Maples

2002 ◽  
Vol 20 (3) ◽  
pp. 138-142
Author(s):  
William E. Klingeman
Keyword(s):  
Host Plant ◽  
Ornamental Plants ◽  
Larval Feeding ◽  
Eastern United States ◽  
Feeding Preferences ◽  
Survival And Development ◽  
Early Instar ◽  
Moderate Resistance ◽  
Hybrid Cross ◽  
Plant Susceptibility

Abstract The bagworm (Thyridopteryx ephemeraeformis (Haworth)) is a polyphagous, native pest of numerous deciduous and evergreen ornamental plants. Bagworm larvae were used to investigate host plant susceptibility among ten species and cultivars of maples that are economically important and commonly encountered in landscapes in the eastern United States. Data analyses from 48-hour choice assays, conducted in the laboratory during 2000 and 2001, indicated that differences existed among maples for bagworm feeding preferences and host plant susceptibility. Results from the 48-hour trials were not as accurate as seasonal no-choice assays, however. No-choice assays during both seasons quantified resistance among maples that limited larval bagworm survival and development. Measurements of larval feeding injury demonstrated resistance in paperbark maple (Acer griseum (Franch.) Pax) and trident maple (A. buergerianum Miq.) when compared with other maples. Laboratory results were corroborated during 2001 by a no-choice field assay, in which early instar bagworm larvae performed well on the majority of maples. In contrast, paperbark maple and trident maple were resistant to bagworm feeding, while ‘Autumn Blaze’ Freeman maple (A. x freemanii E. Murray), a hybrid cross obtained by breeding A. rubrum with A. saccharinum, showed moderate resistance.

Sign in / Sign up

Export Citation Format

Share Document